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Belle 粲物理和新粒子态寻找的实验研究
  • 项目名称：Belle 粲物理和新粒子态寻找的实验研究
  • 项目类别：面上项目
  • 批准号：10875115
  • 申请代码：A050203
  • 项目来源：国家自然科学基金
  • 研究期限：2009-01-01-2011-12-31
  • 项目负责人：张子平
  • 负责人职称：教授
  • 依托单位：中国科学技术大学
  • 批准年度：2008
中文摘要：

中性D介子混合研究取得进展。 两体衰变道D0->K+π-已完成信号和本底分布及时间信息等研究，得到了错误信号事例率的测量结果，完成了拟合程序混合参数的相关性研究和MC检验，即将得到混合参数的测量结果和系统误差研究，下一年度将可发表最终结果。D0->Ksπ+π－道已通过含时达利兹拟合得到混合参数的初步测量结果，正在进行系统误差的研究，预计不久即可公开发表。D0->K+π-π0道也已得到了错误信号事例率的测量结果，达利兹拟合的理论模型已经确定，即将得到最后的拟合结果。D0->KsK+K-道的研究也在顺利推进中。我们进行了奇特共振态的寻找和研究，B±→ωφK±（ω→π+π－π0,φ→K＋K－）道的研究结果已经在PRD发表。首次测量了双光子过程中η'π+π-的产生，通过各方面仔细的研究和检验，得到了ηc→η'π+π-衰变分支比与ηc双光子衰变宽度之积的直接测量，找到了η(1760) 衰变信号的强证据，但是，没有观测到 X(1835)→η'π+π-的显著物理信号,文章即将在国际刊物上发表。我们还进行了双虚光子过程e+e-→ J/ψρ(φ)和B->KX(1835)衰变道的初步研究。

中文主题词： B工厂实验；中性D介子混合；奇特共振态寻找；双光子过程
结论摘要：

英文主题词B factory experiment;neutral D meson mixing; exotic resonance particle search;two photon process

成果综合统计
成果类型
数量
  • 期刊论文
  • 会议论文
  • 专利
  • 获奖
  • 著作
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期刊论文
Measurement of Y(5S) decays to B^0 and B^+ mesons
Measurement of eta eta production in two-photon collisions
Evidence for B- -> tau- nu_bar with a Semileptonic Tagging Method
Measurement of the e+ e- -> J/psi ccbar cross section at \sqrt{s}~10.6GeV
High-statistics study of neutral-pion pair production in two-photon collisions
Measurement of the branching fraction for the decay Upsilon(4S) -> Upsilon(1S) pi+ pi-
High-statistics study of eta pi0 production in two-photon collisions
Dalitz analysis of B->K pi psi' decays and the Z(4430)+
Search for leptonic decays of D0 mesons
Observation of a charmonium-like enhancement in the gamma gamma --> omega J/psi process
Study of the B -> X(3872)(-> D*0bar D0)K decay
Measurement Of |Vub| From Inclusive Charmless Semileptonic B Decays
Search for Lepton Flavor Violating Tau Decays into Three Leptons with 719 Million Produced Tau+Tau-
Observation of Bs^0 -> Ds* pi+, Bs^0 -> Ds* rho+ Decays and Measurement of Bs^0 -> Ds* rho+
Observation of an enhancement in e+e- to Upsilon(1S)pi+pi-, Upsilon(2S)pi+pi-, and Upsilon(3S)pi+pi-
Search for CP violation in τ± → K0S π±ντ decays at Belle
Observation of D+ → K+η' and search for CP violation in D+ → π+η ' decays
Bounds on the width, mass difference and other properties of X(3872) → π+π- J/ψ decay
Measurement of the "e+ e- -> D_s(*)+ D_s(*)-cross sections near threshold using initial-stat
Search for charmonium and charmonium-like states in ϒ(2S) radiative decays
First observation of radiative B0 → φK0γ decays and measurements of their time-depend
Evidence for the Suppressed Decay B- → DK-, D → K+π-
Search for CP Violation in the Decays D0→K0S P0
Study of the K+ pi+ pi- Final State in B+ -> J/psi K+ pi+ pi- and B+ -> psi-prime K+ pi+ pi-
Observation of Bs0→J/ψ f0(980) and Evidence for Bs0→J/ψ f0(1370)
Observation of the interference fragmentation function for charged pion pairs in e+e- annihilation n
Observation of B- → p Λ D0 at Belle
Observation of X(3872) → J/ψ γ and search for X(3872) → ψ'γ in B decay
Measurement of the Decay B_s0 -> D_s- pi+ and Evidence for B_s0 -> D_s{+/-} K{-/+} in e+e- Ann
Observation of B0 to Lambda Lambdabar K0 and B0 to Lambda Lambdabar K*0 at Belle
Precise measurement of hadronic tau-decays with an eta meson
Time-dependent Dalitz Plot Measurement of CP Parameters in B0 --> Ks Pi+ Pi- Decays
Search for Lepton-Flavor-Violating tau Decays into a Lepton and an f0(980) Meson
Evidence of time-dependent CP violation in the decay B0→ D*+ D*-
Measurement of B -> Ds(*) K pi branching fractions
Measurement of the Differential Branching Fraction and Forward-Backword Asymmetry for B->K(*)l+l-
Measurement of D+ -> Ks K+ and D+s -> Ks pi+ branching ratios
Measurement of the e+e- -> D0 D*- pi+ cross section using initial-state radiation
Measurement of cross sections of exclusive e+e- -> VP processes at sqrt(s) = 10.58 GeV
Measurement of y_CP in D0 meson decays to the Ks K+ K- final state
Observation of B+ -> p Lambda-bar pi+pi- at Belle
Measurement of Inclusive Radiative B-meson Decays with a Photon Energy Threshold of 1.7 GeV
Measurements of Charmless Hadronic b->s Penguin Decays in the pipiKpi Final State and Observation
Observation of the doubly Cabibbo-suppressed decay Ds+ -> K+K+pi-
Observation of the phi(1680) and the Y(2175) in e+ e- -> phi pi+ pi-
Belle实验中神经元网络和Fisher判别方法应用于压制连续过程本底的比较(英文)
Search for Lepton-Number-Violating B+ → D- l+ l'+ Decays
Search for CP violating charge asymmetry in B^+ -> J/psi K^+ decays
Search for a Low Mass Particle Decaying into mu+ mu- in B0->K*0 X and B0-> rho X at Belle
First Measurement of Inclusive B -> X_s eta Decays
Evidence for direct CP violation in the decay B+ -> D(*)K+, D0 -> KS0pi+pi- and measurement of
Search for B^0_s -> hh Decays at the Υ(5S) resonance
Measurement of CP violating asymmetries in B^0 -> K^+K^- K^0_S decays with a time-dependent Dalit
Measurement of the form factors of the decay B0 -> D*- l+ nu and determination of the CKM matrix
Search for charmonium and charmonium-like states in $\Upsilon(1S)$ radiative decays
Evidence for B->K eta' gamma Decays at Belle
Search for Lepton Flavor and Lepton Number Violating tau Decays into a Lepton and Two Charged Mesons
Search for CP violation in the decays Ds+ -> Ks0 pi+ and Ds+ -> Ks0 K+
Observation of Bs->Ds(*)Ds(*) using e+e- collisions and a determination of the Bs-Bsbar width dif
Measurements of Branching Fractions for B0 --> Ds+pi- and B0-bar --> Ds+K-
Search for B^0 -> K^*0 K^*0-bar, B^0 -> K^*0 K^*0 and B^0 -> K^+ pi^- K^-+ pi^+- Decays
Measurement of the branching fractions for B0 -> Ds*+pi- and B0 -> Ds*-K+ decays
Measurement of the branching fractions and the invariant mass distributions for tau- -> h- h+ h-
Search for Lepton Flavor Violating tau Decays into lK0s and lK0sK0s
Search for the X(1812) in B±→ K±omega phi
Measurement of CP asymmetries in B0->K0pi0 decays
Observation of B+ -> Dbar*0 tau+ nu_tau and Evidence for B+ -> Dbar^0 tau+ nu_tau at Belle
Search for Lepton-Flavor-Violating tau Decays into a Lepton and a Vector Meson
Study of the decays B→Ds1(2536)+ anti-D(*)
Measurements of time-dependent CP asymmetries in B → D*? π± decays using a partial re
Study of B± → K±(KSKπ)0Decay and Determination of ηc and ηc(2S) Parame
Measurement of the decay B0 → π-l+ν and determination of |Vub|
Belle实验中神经元网络和Fisher判别方法应用于压制连续过程本底的比较）
Belle实验D^0→Ks^0π^＋π^-道中性D介子混合参数测量的本底研究
会议论文
D0-D0bar mixing and other charm decays at Belle
张子平的项目
J/ψ辐射衰变到矢量介子对和赝标介子的实验研究
期刊论文 27
J/ψ辐射衰变中的胶球精细研究与重子对衰变
期刊论文 29 会议论文 1
高能PP对撞及超对称粒子寻找的物理模拟
PP物理模拟及神经元网络法应用研究
期刊论文 9
RHIC Au-Au对撞中奇异粒子的各向异性研究
期刊论文 16 会议论文 6
BESIII实验利用双矢量介子末态研究赝标量介子谱
期刊论文 1